Cylinder and concave tooth straightener.



No. 875,971. PATBNTED JAN. '7, 1908.

O. G. W. WERNIOKE. CYLINDER AND OONOAVE TOOTH STRAIGHTENER.

APPLICATION FILED MAY 3, 1907.

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minesses yzyzfbr BY IYISmJYS 2 Why/WA No. 875,971. PATENTED JAN. 7, 1908.

G. G W. WERNIGKE. CYLINDER AND OONOAVE TOOTH STRAIGHTENER.

APPLICATION FILED MAY 3, 1907,

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hi; attorne -'1 CARL G. W. WERNIGKE, OF MINNEAPOLIS, MINNESOTA.

CYLINDER AND GONCAVE TOOTH STRAIGHTENER.

Specification of Letters Patent.

Patented Jan. '7, 1908.

Application filed May 3. 1907. Serial No. 371.745.

T 0 all whom it may concern:

Be it known that I, CARL G. Vi". \Vnnmoxn, a citizen of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Cylinder and Concave Tooth Straighteners; and I do hereby declare the following to be a lull, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention has for its object to provide a simple and eflicient device for straightening the teeth of threshing cylinders and concaves while they are applied in working position, and to this end it consists of the novel device hereinafter described and defined in the claims.

The invention is illustrated in the accompanying drawings, wherein like characters indicate like parts throughout the several views.

Referring to the drawings, Figure 1 is a view taken in section through a threshing cylinder and concave, and showing my improved tooth straightener applied to one of the cylinder teeth. Fig. 2 is a plan view of the improved tooth straightener, some parts being broken away. Fig. 3 is a side elevation of the said straightener. Fig. 4 is an end elevation of the improved straightener. Fig. 5 is a view partly in side elevation and partly in section, showing the improved straightener applied to one of the cylinder teeth; and Fig. 6 is a view similar to Fig. 5, but shows the straightener applied in a different manner.

The numeral 1 indicates the threshing cylinder and the numeral 2 the cylinder teeth.

The numeral 3 indicates sections of the concave, and the numeral 4 the teeth of the concave, which parts are of the usual construction.

The improved straightener is formed from a metal bar 5, preferably of steel, which bar at one end is bent laterally or ofl'set at approximately a right angle to the body of the bar, as indicated at 6. This oil'set portion or foot 6 and the adjacent end of the bar 5 are formed with a slot 7 which is wide enough to straddle the projecting blade portions of the cylinder teeth 2 and concave teeth 4.

I to the extreme end of the offset end portion or foot 6, see Fig. 4. In a direction edgewise of the bar 5, the said slot 7 is, therefore, approximately L.shaped, which adapts the device to be applied lengthwise of the tooth and straddle the blade thereof, as shown in Fig. 6, or to be applied transversely of the tooth, as shown in Fig. 5. hen the device is applied as shown either by full lines or by dotted lines in Fig. 6, it may be used to bend the blade of the tooth laterally, and when applied as shown by full or dotted lines in Fig. 5, it is adapted to be used to twist the tooth into proper alinement or position.

By reference to Fig. 1 it will be noted that the device is adapted to be inserted between the longitudinal bars of the threshing cylinder 1 and into engagement with the teeth of the concave. The bar of the straightener is preferably bent or curved laterally at 5 so as to bring the lower extremity of the slot 7 approximately in line with the body of the said bar. This makes it possible to reach certain of the concave teeth through the cylinder and to engage the same in positions which could not be accomplished with a straight bar.

The section 3 of a threshing concave of standard construction are, as is well known, fitted at their endsin segmental grooves of laterally spaced supports and are capable of removal by edgewise movements in such grooves. lVhen the straightener is applied through the threshing cylinder and engaged with one of the teeth of one of the sections of the concave, as shown by dotted lines in Fig. 1, and a cylinder is then rotated in the direction of the arrow marked thereon in Fig. l, the said concave section may be easily raised out of its seat.

The improved tooth straightener above described has in actual practice been found highly ellicient for the purposes had. in view.

\Vhat I claim is:

1. A cylinder and concave tooth straightener comprising a metal bar 5 having a laterally bent end 6 and formed with an angular tooth receiving slot 7 that extends into the laterally bent end 6 thereof, substantially as described.

2. A cylinder and concave tooth straightener comprising a metal bar 5, provided at one end with a laterally bent end portion 6,

The said slot 7 does not, as is evident, extend 1 and formed with an angular slot 7 that extends from the body of said bar into the laterally bent end 6 thereof, the said bar 5 being bent or laterally offset at 5 so as to throw the extended end of said bar approxi- 5 mately into line with that extremity of said slot 7 which terminates in the said laterally bent end 6, substantially as described.

CARL G. W. WVERNICKE.

Vitnesses:

MALIE HOEL, F. D. MERCHANT. 

